The main problem when I take pictures for people, especially compact camera users is because I'm carrying around a DSLR with me, they expect professional quality pictures. Obviously I'm no pro, and I don't want to disappoint them, so I generally mess around with the settings until I get the shot that I desire.

The post about Nikon having 2 dials, I think the front one should be shutter (more commonly used), and the rear one, the aperture. I am glad that Canon have ISO and WB (shortcut cursor) buttons, but I use the quick menu a lot now.

DSLRs aren't cheap, why use it in full auto mode (or even locked auto)? Well that really is the million dollar question. Another point is, If you have spent that much money on a camera, why stick with an inexpensive kit lens?

The comment about people wanting you to use their settings, I don't really agree with it. If they are using full auto, then they are most likely non the wiser anyway, and if you feel that you can take a better photograph with your settings, then why not? After all, it is You that is taking it, not them, and as just mentioned, if they see a DSLR, they may be expecting professional level results.

If you have experience with the said camera, or similar models, then you should be able to have it set up before they can even pose.

When in Xian China, a Chinese couple with a baby asked my wife for a photo so she put her hand out for the camera, the lady took my wife's hand to and the husband took a photo of them and then another with the baby and again with their friends. Strange but I also took some shots.